diff options
Diffstat (limited to 'drivers/mmc/host/renesas_sdhi_sys_dmac.c')
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_sys_dmac.c | 109 |
1 files changed, 107 insertions, 2 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_sys_dmac.c b/drivers/mmc/host/renesas_sdhi_sys_dmac.c index 94f453c2da6d..acc42e0a3411 100644 --- a/drivers/mmc/host/renesas_sdhi_sys_dmac.c +++ b/drivers/mmc/host/renesas_sdhi_sys_dmac.c @@ -13,13 +13,93 @@ #include <linux/dmaengine.h> #include <linux/mfd/tmio.h> #include <linux/mmc/host.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> #include <linux/pagemap.h> #include <linux/scatterlist.h> +#include "renesas_sdhi.h" #include "tmio_mmc.h" #define TMIO_MMC_MIN_DMA_LEN 8 +static const struct renesas_sdhi_of_data of_default_cfg = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT, +}; + +static const struct renesas_sdhi_of_data of_rz_compatible = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_32BIT_DATA_PORT, + .tmio_ocr_mask = MMC_VDD_32_33, + .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, +}; + +static const struct renesas_sdhi_of_data of_rcar_gen1_compatible = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | + TMIO_MMC_CLK_ACTUAL, + .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, +}; + +/* Definitions for sampling clocks */ +static struct renesas_sdhi_scc rcar_gen2_scc_taps[] = { + { + .clk_rate = 156000000, + .tap = 0x00000703, + }, + { + .clk_rate = 0, + .tap = 0x00000300, + }, +}; + +static const struct renesas_sdhi_of_data of_rcar_gen2_compatible = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | + TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2, + .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, + .dma_buswidth = DMA_SLAVE_BUSWIDTH_4_BYTES, + .dma_rx_offset = 0x2000, + .scc_offset = 0x0300, + .taps = rcar_gen2_scc_taps, + .taps_num = ARRAY_SIZE(rcar_gen2_scc_taps), +}; + +/* Definitions for sampling clocks */ +static struct renesas_sdhi_scc rcar_gen3_scc_taps[] = { + { + .clk_rate = 0, + .tap = 0x00000300, + }, +}; + +static const struct renesas_sdhi_of_data of_rcar_gen3_compatible = { + .tmio_flags = TMIO_MMC_HAS_IDLE_WAIT | TMIO_MMC_WRPROTECT_DISABLE | + TMIO_MMC_CLK_ACTUAL | TMIO_MMC_MIN_RCAR2, + .capabilities = MMC_CAP_SD_HIGHSPEED | MMC_CAP_SDIO_IRQ, + .bus_shift = 2, + .scc_offset = 0x1000, + .taps = rcar_gen3_scc_taps, + .taps_num = ARRAY_SIZE(rcar_gen3_scc_taps), +}; + +static const struct of_device_id renesas_sdhi_sys_dmac_of_match[] = { + { .compatible = "renesas,sdhi-shmobile" }, + { .compatible = "renesas,sdhi-sh73a0", .data = &of_default_cfg, }, + { .compatible = "renesas,sdhi-r8a73a4", .data = &of_default_cfg, }, + { .compatible = "renesas,sdhi-r8a7740", .data = &of_default_cfg, }, + { .compatible = "renesas,sdhi-r7s72100", .data = &of_rz_compatible, }, + { .compatible = "renesas,sdhi-r8a7778", .data = &of_rcar_gen1_compatible, }, + { .compatible = "renesas,sdhi-r8a7779", .data = &of_rcar_gen1_compatible, }, + { .compatible = "renesas,sdhi-r8a7790", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7791", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7792", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7793", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7794", .data = &of_rcar_gen2_compatible, }, + { .compatible = "renesas,sdhi-r8a7795", .data = &of_rcar_gen3_compatible, }, + { .compatible = "renesas,sdhi-r8a7796", .data = &of_rcar_gen3_compatible, }, + {}, +}; +MODULE_DEVICE_TABLE(of, renesas_sdhi_sys_dmac_of_match); + + static void renesas_sdhi_sys_dmac_enable_dma(struct tmio_mmc_host *host, bool enable) { @@ -365,7 +445,32 @@ static const struct tmio_mmc_dma_ops renesas_sdhi_sys_dmac_dma_ops = { .abort = renesas_sdhi_sys_dmac_abort_dma, }; -const struct tmio_mmc_dma_ops *renesas_sdhi_get_dma_ops(void) +static int renesas_sdhi_sys_dmac_probe(struct platform_device *pdev) { - return &renesas_sdhi_sys_dmac_dma_ops; + return renesas_sdhi_probe(pdev, &renesas_sdhi_sys_dmac_dma_ops); } + +static const struct dev_pm_ops renesas_sdhi_sys_dmac_dev_pm_ops = { + SET_SYSTEM_SLEEP_PM_OPS(pm_runtime_force_suspend, + pm_runtime_force_resume) + SET_RUNTIME_PM_OPS(tmio_mmc_host_runtime_suspend, + tmio_mmc_host_runtime_resume, + NULL) +}; + +static struct platform_driver renesas_sys_dmac_sdhi_driver = { + .driver = { + .name = "sh_mobile_sdhi", + .pm = &renesas_sdhi_sys_dmac_dev_pm_ops, + .of_match_table = renesas_sdhi_sys_dmac_of_match, + }, + .probe = renesas_sdhi_sys_dmac_probe, + .remove = renesas_sdhi_remove, +}; + +module_platform_driver(renesas_sys_dmac_sdhi_driver); + +MODULE_DESCRIPTION("Renesas SDHI driver"); +MODULE_AUTHOR("Magnus Damm"); +MODULE_LICENSE("GPL v2"); +MODULE_ALIAS("platform:sh_mobile_sdhi"); |